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A (No Model.) 7 sheetsshet -1.

' R. MIEHLB., PRINTING PRESS. No. 574,207. Patented Deo.- 29, y1.896.

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4g www uuuuuulul uuu 'i u uu y 'u u (No Model.) 7 Sheets-Sheet 2.

R.. 'MIBHLEL PRINTING PRESS.

No. 574,207. i Patented Dee. 29, 1896. Y

' (No Molel.)v I 7 Sheets-Sheet 3.

R.v MIEHLE. PRINTINGPRBSS.

No. 574,207.. Patented Deo. 29, 1896.

(No Model.) 7 Sheets-Sheet 4.

R. MIEHLB PRINTING PRESS.

No. 574,207. Patented Deo. 291,' 1896.

R; MIEHLB. PRINTING PRESS.

7 Sheets-Sheet 5.

(No Model.)

7N10'.V574,207. Patented Deo. 29, 1896.

(No Model...) -7 Sheetzs-Shei'J 6. R'. MIEHLE.

vP'Rm'rINe-PRESS.l

No. 574,207. Patented Dec. 29, 1896.

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(No Model.)

R. MIBHLE. PRINTING PRES-v ,Patented Dec. 29,1896.

Uhuru)V STATES PATENT Ormea.

ROBERT MIEHLE, OF CHICAGO, ILLINOIS, ASSIGXOR TO THE MIEIILE PRIN"- ING PRESS AND MANUFACTURING-COMPANY, OF SAME PLACE.

PRiNTlNG-PRESS.

' SPECIFICATION forming part of Letters Patent No. 574,207, dated December 29, 1896.

. Application filed February 2l, 1893. Serial N0- 463,268. (No model.) i

To CLZZ whom t muy concor/t:

Beit known that I, ROBERT MIEHLE, of Chicago, inthe county of Cook and State of Illinois, have invented certain new and useful Improvements in Printing-Presses; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to printing-presses of that class embracing a rotary impressioncylinder and a flat type-bed and in which the impression-cylinder is moved toward and from the type-bed, and the parts areso arranged that thc impression-cylinder is lifted free from the type-bed when the latter moves backwardly beneath the cylinder and is depressed to carry the paper against the type in the forward movement of the type-bed. In machines of this kind the paper is fed to the impression-cylinder, and the printing of the sheet is accomplished at every second rotation of the impression-cylinder; and this invention relates more especially to means for actuating the several operative parts carried by the impression-cylinder at proper times in the rotation thereof, the invention including also improvements in the tympan holding or clamping devices on the cylinder and other parts connected therewith.

The invention consists inthe matters hereinafter described, and pointed out in the appended claims.

In the accompanying drawings, Figures 1 and l together are a complete plan View of a printing-press cylinder embodying all the improvements which comprise the subject of this invention. Fig. 2 is an end elevation of my improved cylinder from the side on which the power for operating is applied, showing so much of a press as will illustrate the manner in which the cylinder is driven and its relation to adjacent parts. Fig. 3 is a similar view of the other end of the cylinder and adjacent parts of the press. Fig. 4 is a vertical sectional view on the line 4 4 of Fig. l, looking in the direction indicated by the arrows, showing the tumbler on the end of the nipper-shaft,.whereby said shaft and nippers are actuated, the guide for the sheets, its

shaft, and the springs for retaining the sheet in proper position, and other operative parts in dotted lines. Fig. 5 is a vertical view on the line 5 5 of Fig. l, lookingin the direction i of the arrows, showing the guide, the grippin cam-lever, thecam at the lower end thereof, the cam-groove in the gear-wheel, and the shoe which causes the cam-wheelto follow the cam-groove in the proper manner, also the pins for actuating which said cam-lever is primarily provided. Fig. 6 is a vertical sectional view of the cylinder on the line 6 6 of Fig. la, looking in the direction indicated by the arrows and showing` the lever for tightening the tympan-sheet clamps and the lug under which it is inserted to retain it in position, the roller and arm for operating the shooiiies, and the spring for supporting said wheel in position to be tripped by the camblock on the guide-spring rod, and other op` erative parts in dotted lines, the relative positions of the various rods and shafts being also shown. Fig. 7 is a vertical sectional View on the line 7 7 of Fig. l, looking in the direction indicated by the arrows, showing the tympansheet clamps, the nippers, the shoo-ies, and the shafts for adjusting the tympan-sheets. Fig. '8 is a partial sectional view on the line 8 8 of Fig. l, looking in the direction indicated by the arrows, showing the Dipper-fingers and the shaft on which they are carried and the spring for supplementing the action 'of the tumbler on said shaft, whereby it is the manner of coupling the section of the nipper-shaft carrying the nipper-ngers to the section thereof on which the tumbler is carried. Figs. lO, ll, and l2 are views showing in detail the grip-pin cam-lever, its method of attachment, and its relation to adjacent parts actuated thereby. Figs. 13 and 14 are similar detail views of the guide-arm and parts operating in connection therewith. Figs. l5 and 16 are details of the guide whereby the delivery of paper to the press is controlled.

In the said drawings all of the parts of the press are shown in the positions that they will occupyat the beginning of the printing operation just after the sheet has been grasped by IOO the gripping` devices which hold it upon the impression-cylindein A clearerunderstanding of the mechanisms forming the subject of this invention will be facilitated by consideration of the fact that in a press of the kind herein shown, wherein two revolutions of the impression-eylinder are requisite for the printing of each sheet, the delivery of the sheet takes place during one revolution thereof, and the printing of the sheet, the delivery thereof from the cylinder, and the appropriate movements of the various parts incident to printing the sheet take place during the second revolution, and that the first revolution takes place while the typebed and form thereon are moving backward beneath the cylinder preparatory to the mal;- ing of the impression, and the second rotation takes place during the forward movement of the type-bed and form and when the cylinder is depressed to make the impression.

In the said drawings, A indicates the frame of the press, and. i3 the impression-cylinder. The said cylinder is mounted in bearings A on the frame, and power for driving the cylinderand parts operating` in connection therewith is imparted from the pulley-shaft C, driven by the pulley C', supplied by means of the gear-wheel C2, Fig. 2, attached to the driving-shaft, the idle-gear C, carried on a stud set in the frame, and the gear-wheel C, secured to the shaft B', on which the cylinder is supported, said gear-wheel C4 heilig located outside of the frame A and bearin g A at' one end of the machine. A loose pulley C5 is shown as mounted on the main driving-shaft adjacent to the pulley C, to which the driving-belt may be shifted when it is desired to stop the press. A guard Us is shown in the drawings as placed around the marginal parts of the gear-wheels C3 C'l for the protection of the operator, said guard being rigidly attached to the frame in the manner illustrated in the drawings.

The impression-cylinder illustrated is of common form, consisting of end walls or heads 32 B3 and an intermediate cylindric shell B4, provided with longitudinal openings or slots iii l The main parts carried by the cylinder are located in the openings or slot B5 and consist of the clamps or grippers D D D for holding the edge of the tympan, the nippers IC E E for holding the advance edge of the sheet to be printed, and the lifting-fingers or shoe-flies F F F, by which the advance edge of the sheet is lifted from the cylinder at the time of the delivery or discharge of the printed sheet. The grippers D D D are not moved excepting when it is desired to take out and replace the tympan-sheet, but the nippcrs E E and lifting-fingers F F are actua-ted at each second revolution of the impression-cylinder. Improved devices are herein shown for holding in place the grippers D D D, as well as for operating the nippers E E E and liftingiingers F F F.

G G G are the stops or guide-ngers above the im pressioncylinder, movable toward and from the same, said fingers being for the purpose of insuring the delivery by the person feeding the press of the sheets to be printed in the proper position to be caught by the nippers E E E, and said guide-fingers are for this purpose actuated by devices which lift the same and allow the advance of the sheet at the moment the advance edge of the same is caught by the nippers. The said nippers E E E, the lifting-fingers F F F, and guideingers G G G are all actuated at each alternate revolution of the impression-cylinder, and the devices for giving movement to these parts constitute the principal features of the mechanism illustrated. Improved features of construction are, however, also illustrated in the drawings for holding in place the tympan-sheet clamps or grippers D D D.

To first refer to the devices shown for supportingand holding in place the said grippers, these parts are made as follows: The tympan-grippers and parts supporting the same are more clearly shown in Figs. l, (i, and 7. Said fingers are supported upon a shaft D, extending longitudinally ofthe iinpression-cylinder, within the hollow interior thereof, and adjacent to the margin of the slot or opening B5 at which the edge of the tyinpan is located and at which the advance edge of the sheets to be printed are located when gripped bythe nippers, the said clamps D D D being attached to the shaft and extending outwardly therefrom in position to press against the radial surface of the side edge of the cylinder-shell B'. The shaft D is mounted at its ends in liiearing-apertu res in the cylinder-heads 32133, terminating flush with or inside of the outer surface of the head 152, but extending outside of the head Bi5 for the attachment of an arm or lever D2. The said shaft D' has additional bearing at the middle of the cylinder in a bearing-plate B7, secured to a transverse diaphragm or partition Bg in the cylinder, as clearly seen in Fig. 7. The arm D2 is arranged at right angles with the shaft or parallel with the face of the head B3 and is made of thin spring metal, so that its free end may be moved a short distance toward and from the head, the arm being provided with a hub d., through which is inserted a set-screw d for rigidly securing` said arm to the shaft D'. VUpon the outer face of the head D3 is located a lug or projection D, adapted for engagement with the outer end of said arm D2 when the grippers l) D D are in position to hold or grip the edge ot the tympan, these parts heilig so arranged that the arm Dz will normally engage the said lug D3, but may be sprung or bent outwardly to pass over the same when it is desired to rclease the grippers. The outer end of the said lug D3 is preferably beveled or inclined, as seen at cl2, so that when the arm I)2 is swung inwardly toward the center of the cylinder and in a direction to bring the grippers against the edge of the tympan by pressure IIO applied to its free end said arm then striking the inclined surface d2 will spring over the said lug and will thereafter engage the same without attention on the part of the operator to secure this end.

For releasing the gripping-fingers from the tympan it is only necessary to grasp the free end of the arm D2 and press it outwardly until disengaged from the lug D3, after which said arm may be moved to turn the shaft D and thereby swing the grippers away from the edge of t-he cylinder. An eye d2 on the end of the lever D2 enables the same to be easily grasped by the hand or by a suitable hooked implement.

To now refer to devices for supporting and actuating the nippers E E E, the sheet-lifters F F F, and sheet-guides G G G, it may first be stated that all these parts are actuated at proper intervals, to wit, at every second rotation of the impression-cylinder, through the medium of an actuating mechanism deriving motion from the gear-wheel C2, the same being constructed as follows:

I, Figs. l, 5, l0, 1l, and l2, is an oscillating lever located between the machine-frame and said gear-wheel and mounted on a stud i, secured to the frame and extending outwardly therefrom. The lever I is pivoted centrally on the stud 1I and embraces two oppositelyextending arlns I I2 and a central hub, to which said arms are attached. At its end nearest the central axis of the wheel C"l the lever I is provided with a stud or bearingpin t', carrying a curved guide-block t2, which engages a cam-slot C6, formed in the inner surface of the wheel C4. The cam-groove C, as clearly shown in Fig. 5, is provided with outer and inner concentric parts c c', which are connected with each other by spirallydeflected or obliquely-arranged parts c2 c3, which cross or intersect each other, so that the guide-piece t2, which engages said groove, will in the rotation of the wheel move continuously in the groove and across the intersection of the two parts thereof, so that during one revolution of the wheel it will engage the outer concentric part c and in the next succeeding rotation it will engage the inner concentric part c', thereby giving oscillatory movement to the lever I in such a manner that the lever will be moved in one direction at one rotation of the wheel and in the opposite direction at the next rotation thereof, or, in other words, will make one complete backand-forth or oscillatory movement during two rotations of t-he wheel. The said lever I, thus moved by the action of the cam-groove O6, serves to control the movements of the several operative parts above referred to, to Wit, the sheet-nippers, sheet-lifters, and guides, as will hereinafter more fully appear in the detailed description of the devices by which said parts are directly actuated. The general construction by which the said nippers, sheet-lifters, and sheet-guides are immediately supported will now be described.

The nippers E E E are mounted on a shaft E", having bearings at its opposite ends in the cylinderheads B and B2 and an intermediate bearing in the plate B7. Attached to said shaft outside of the head B is a cross-head E2, provided with opposite radial slots e e. The cross-head E2, together with the sliding pins H II, mounted on the machine-frame and adapted to engage the cross-head at proper times, constitute devices by which the said shaft E is rocked or oscillated to throw the said nippers E into contact with and away from the surface of the cylinder. The said nippers are held against the cylinder and in position to grip the edge of the 'sheet by means of a spring E2, Fig. 8, which acts upon the said shaft in a direction to hold the nip- Y pers against the cylinder or to hold the said nippers away from the cylinder, the rockshaft having an oscillatory movement sufficient to enable the ends of 'the nippers when thrown backwardly to swing inside ofthe outer circumference of the cylinder, the oscillatory movement of the shaft in either direction being limited by a st'op-pin or stud e2, secured in the head B in position for contact of the cross-head E2 therewith.

For holding the nippers at either limit of their oscillatory movement the spring E3 is arranged to act by expansion on a rod ewhich is pivoted to an arm e4 on the said shaft E', said rod e2 having sliding engagement with a block e5, pivoted on the inner face of the head B2 in such position that the spring E3 will be compressed when the nippers E E E are in their intermediate position and will be expanded when the nippers are at either limit of their throw. That is to say, the block e5 forms a pivotal connection of the rod e3 with the cylinder, which pivotal connection is located at a point approximately in alinement with the arm e4 when the nippers are at an intermediate point in their throw, so that when the shaft is turned so as to carry the nippers and the said arm e4 in either direction from their intermediate position the expansion of the spring will turn the shaft so as to carry the nippers either to the backward or forward limit of their throw. As constructed in detail the rod e2 is provided with a block or collar e,loca1 ed near its point of connection with the arm e4, and the spring E2 is placed around the rod e2 and in compression between the collar e6 and the pivot-block e5, through which the rod c2 is arranged to slide at its free end. This particular arrangement of the spring is, however, only one of a number of similar devices which may be applied to move the nippers in the manner described.

Motion is given to the sliding pins H H' which actuate the cross-head E2 from the oscillating lever I, hereinbefore referred t-o, by means as follows: The said parts, as clearly shown in Figs. l, l-, 5, l0, ll, and 12, are mounted and slide endwise in bearing-apertures in the frame and are adapted to extend from the frame inwardly toward the cylinder IOO IOS

IIO

and outwardly toward the wheel C, the parts being so located as to be adjacent to the outer ends of the arms I 12 of said lever l, which lever is connected with the pins by means giving longitudinal movement to the pins when the lever is actuated, the same consisting in the construction illustrated of obliquely-arranged or spiral tlan ges t il on the ends of the arms l l2, which oblique or spiral flanges are adapted to engage notches t t/ in the said pins II Il', as clearly shown in the drawings, Figs. ll. and l2. The parts are so arranged, furthermore, that the pins II and ll' will be oppositely moved. That is to say, when the pin Il is at its inward position or thrown toward the cylinder-head the pin ll will be withdrawn, and movement of the lever I will draw the pin ll outwardly and at the same time thrust the pin Il inwardly. Inasmuch as movement of the lever I in one direction only takes place at each complete rotation of the im pression-cylinder it follows that d uring` one rotation of the cylinder the pin ll will be thrust inwardly into position to engage the cross-head E2 and during the next rotation the Din lI will be withdrawn and the pin ll' thrust inwardly to engage said cross-head. The slot c of the cross-head E2 is arranged to engage the pill I'Lwhieh is located nearest the periphery ot the cylinder, and the open end of said slot e is so located that when the nippers are thrown backwardly and held in that position by the spring E3 the open end of said slot will be in position to engage the said pin ll. Similarly the slot e' is so arranged that when the nippers are closed against the sheet and held in that position by thc said spring the open end of said slot will be in position to engage the pin Il.

The actuation of the lever l and the movement of the pins H and Il' inwardly and outwardly takes place when the cross-head is in the part of its revolution remote from the said pins, and the pin ll, which acts in the slot c to close the grippers, is so located relatively to the sheet-feeding devices that the said pin will engage the cross-head and close the grippers against the edge of the sheet at that point in the rotation of the cylinder when the nippers are in position to engage the sheet at the proper point. Similarly the pin ll.' is arranged in position to engage the slot e' at that point in the revolution of the cylinder when it is necessary to release the sheet to secure its discharge from the cylinder. As shown in the drawings, Fig. t, the parts are seen in the position which they occupy just after the nippers have been closed and the cross-head is leaving the pin Il, said pin having by its engagement with the slot c turned the cross-head into the position shown. The cross-head remains in this position during the next rotation of the cylinder, the open end of the slot c being` in the position to engage the pin Il', so as to release the sheet at the end ot' such rotation.

J J indicate the ily-fingers, on which the sheet is received, and said. ily-lingers being located at the downwardly-movin g side ot' the cylinder somewhat in advance of the point atwhich the sheet is received from the feedtable K, it follows that the release of the sheet will take place before its forward edge reaches the said ily-lingers.

The slot c is shown as beingl made somewhat curved instead of straight, the curvature being such that the outer ends of its side walls stand parallel, or nearly so, with the curved path of the pin instead of at a considerable inclination to such path, as would be the case if the slot were straight, so that the pin on bein encountered by the cross-head will turn the latter, at ilrst slowly, and more rapidly as the pin enters farther into the slot, thereby preventing objectionable shock or jar by contact of the rapit'lly-moving parts.

At one side of the cross-head E2 the Ilange c7, forming the side wall of the slots c c', is extended beyond the otherside wall, as clearly seen in Figs. l and 9, and a third pin Il", shorter than the pin Il and adapted to engage said ilange c' only, is connected and moves with the pin H, said pin .113 being so located that it will be encountered by the cross-head E2 before the same reaches the pin ll. The purpose of said pin H3 is by acting on the tl ange eto bring the cross-head with certainty into position to en gage the pin 1I and thereby prevent breakage of or injury to the parts in case the spring E3 should have failed to properly return the cross-head into position to engagement with said pin H when last moved by the pin Il. The said pin Il is shown as connected with the pin 1I by means of an arm H4, secured to the outer end of the pin Il and entering a recess in the side of the pin Il.

As an improved construction in the shaft E, supporting the nippers E, said shaft instead of heilig extended through the head B2 and attached tothe cross-head E2 terminates within said head, and the cross-head E2, as clearly seen in Fig. t), is provided with a short shaft El, made integral with the said crosshead and long enough to extend through the said head B2, said short shaft being connected with the main part of the shaft E by a coupling-piece E, having sockets to receive the ends ot' the shafts E and E" and suitable devices for holding the shafts in the sockets, herein shown as consisting of pins inserted through the parts. The advantage of this construction is that when it is desired to remove the cross-head E2 this can be done by disconnecting the shattsection EL at the coupling E, when the cross-head and the shaft section attached thereto may be removed without disturbing the main part of the shaft E'. In the particular construction shown the arm c, upon which the spring Els acts, is formed integral with the couplingpiece E, as clearly seen in Fig. l. Said coupling-piece is furthermore shown as having the form of a split sleeve and provided with i'langes, through which are inserted bolts e es IIO for clamping the parts of the coupling-piece against the ends of the shaft-sections to afford a more rigid connection between the saine.

It will of course be understood that in the operation of the parts above referred to the pins H and H, acting on the cross-head E2, serve to turn or oscillate the shaft E for opening-and closing the sheet-nippers E E E against the action of the spring E2, which tends to hold said nippers either in their open or closed position, so that the actuating device described has no effect on the nippers except when the cross-head encounters the pins in Vthe manner before stated.

To now refer to the devices for support-ing and actuating the sheet-litters F F F, these parts are made as follows: Said sheet-lifters have the form of relatively long iingers attached to the longitudinal shaft F', which is mounted at its ends in the heads B2 B3 of the cylinder and to the end of which outside of the head B3 are secured a rocking arm F2, upon the end of which is mounted an antifriction-roller F3. The spring F4, mounted on the cylinder-head, acts at its free end against the rocking arm F2 in a direction to throw the lifting-fingers toward the outer surface of theimpression-cylinder. An arm F5, Figs. l and 6, attached to the shaft F inside of the cylinder-head B2 and resting on a shoulderh, formed at the end of the slot or opening in the cylinder, serves to limit the rotation of the shaft under the action of the spring F4, and to thereby prevent the ends of the lifting-fingers pressing with too much force against the tympan, while leaving the said lifting-fingers free for adjustment or removal without reference to the action of the spring upon the shaft.

rlhespring F4 illustrated contains improved features of construction in springs used for the same purpose, said spring F4 being attached toa blockj', whichis pivoted, by means of a pivot-stud j", to the cylinder-head, and the spring is provided with an arm f2, extending beyond the pivotf" and adapted for engagement with a projecting part of or upon the shaft D', which supports the tympan grippers or clamps D D,said projection in the particular instance illustrated consisting of the set-screw d', which holds the arm D2 on said shaft D. These parts are so arranged that when the tympan is gripped by the clamps D D D the head o f the set-screw d' (or other projecting part employed for this purpose) will engage the arm f2 in a manner to hold the spring F4 against the rocking arm F2, or, in other words, so as to hold the said spring in operative position, the'head of the set-screw (or projection) and the arm f2 being, however, so located with reference to each other that when the rock-shaft D' is turned to release the clamps or grippers from the tympan the arm f2 will be disengaged and the spring F4 allowed to fall away from -ative position,

the rocking arm F2, or it will be out of oper- The object of this construction is to enable the lifting-fingers to be thrown backward out of the way at the time the grippers are released for removing the tympan, it being obvious that when the arm D2of the gripper-shaft D' is thrown outwardly for releasing the grippers the spring F2 will at the same time be released, so that it will no longer exert its pressure on the shaft F', and the latter shaft may be turned to throw the fingers backwardly away from the margin of the cylinder. The said lifting-fingers are actuated at the proper time for lifting' the advance edge of the sheet preparatory to the discharge of the same by means acting on the rock-shaft F2 as follows: L is an oscillating cam-arm loca-ted in t-he same vertical plane with the roller Fs of the arm F2 at one side of the impression-cylinder, said camlever being provided at its inner margin with a cam-surface l, in which said roller acts when the cam is thrown inwardly in position for contact with said roller. In the particular construction shown said lever L is pivotally mounted on a stationary rod A2, which extends lengthwise ot the impression-cylinder at the side thereof at which the sheets are discharged and which affords support for a plurality of curved sheet-guides A3 A3, which extend downwardly over the downwardlymoving face of the cylinder, as heretofore common. The cam-arm L is provided above its point of pivotalsupport with an upwardlyextending arm L', adapted for engagement with a cam projection L2, Figs. l and 3, attached to a rock-shaft L2, located above and parallel with the rod A2. At its opposite end or that nearest the gear-wheel C4 said rockshaft L2 is provided with a rigidly-attached rocking arm L4, which extends inwardly from the shaft and is adapted to bear at its free end upon the lower part of the actuating-lever I, Figs. 2, lO, and l2.

A coiled spring L5, attached at one end to a collar l' on t-he shaft L3 and at its opposite end to an adjacent stationary part of the machine, tends to turn said shaft in a direction to hold the arm L4 constantlyin contact with the actuating-lever l, so that when said actuating-lever is moved or oscillated corresponding movement will be transmitted to the shaft L3 and the cam-arm L will be thrown toward or from the cylinder. inasmuch as the said actnating-leverl is thrown inwardly and outwardlyin alternate rotations of the cylinder, it follows that the cam-arm L will be thrown into position to act upon the rocking arm F2 of the lifting-finger shaft at every alternate rotation of the im pression-cylinder. The said lever being located in the position to engage and move the rocking arm F2 as the advance edge of the sheet of paper approaches the fly-fingers J, it follows that the sheet-lfters will be actuated to free the advance edge of the sheet from the cylinder before the said IIO c meteo? advance edge ol' the sheet reaches the fly-iingers, so that the sheet will be properly delivered thereto.

To facilitate the removal of the shoe-ily shaft F from the cylinder, a special construction is provided, as follows: The said shaft, instead of being extended through the cylinder-head Bf", terminates inside of said cylinder-head, and the arm F2 is attached to a short shaft-section, which passes through said head B and is provided on its inner end with a socketed coupling-piece fi", which is provided with a socket for the end of the shaft F, said socket being provided in one side with an open slot adapted for engagement with a pin or stud f1 on the said shaft F. As herein shown, the arm F5, by which the rotary movement of the shaft is limited, is secured in the couplingpieccfi At its opposite end or that adjacent to the cylinder-head B2 the shaft F passes through a bearing-aperture in said head and is held from endwisc movement by means of a leaf-spring F, attached to the outer face of the head and coveringthe hearing-apertnre therein, as clearly seen in Figs. .l and 4. The spring F, in connection with the socketed coupling-piecefi", affords a convenient means of quickly removing and re placing the shaft F, it being obvious that by thrusting said shaft endwise through thehead B9 the shaft may, by the yielding of the spring F, allow its opposite end to be disengaged from the socket f, after which the shaft can be drawn inwardlythrough the head B2 until disengaged therefron'i, when it will be entirely free and may be removed from the cylinder.

To now refer to the guide-iingers G, the paris for supporting and operating the same are made as follows: Saidguide-iingers, which are indicated as a whole by G, consist of vertical parts G, which form strips for the advancc edge of the. sheets` and horizontal arms G2, which support said vertical parts and which are attached to a horizontal rock-shaft Gi", which is mounted at its ends on the niachinc-frame and extends over the top of the impression-cylinder. v

As shown in the accompanying drawings, a bearing for the rock-shaft Gi3 at the end of the Cylinder nearest the gear-wheel C4 is formed in a block A", which is attached to the top of the main frame and affords support for one side of the feed-table K and also aifords bearings for the pin ll, hereinbefore described. Bearing for the opposite end of the shaft G3 is afforded by a similar block Ai", which affords support for the feed-table at one side.

of the machine. Outside of said block A the shaft is provided with rigid arms G*I and G, secured to the same by means of a collar en circling the shaft, and attached to said arm or its collar is a coiled spring G5, the' opposite end 0f which is attached to the maehineframe and which acts by its tension to turn the shaft Ggin a direction to carry the guidefingers toward the cylinder. The turning of the shaft in this direction is, however, limited by a stop-pin d', secured in the block A5 in position for Contact with the arm G, said pin also acting by contact of the arm G" therewith to limit the movement of the shaft in the opposite direction when the guide-fingers are thrown backward] y. At the opposite end of the machine, or that adjacent to the gearwheel G, are located devices for actuating the shaft Gg so as to lift the fingers against the action of the spring G5, the same being shown in Figs. l, 2,13, and 14 and being constructed as follows: M is an actuating-arm mounted coneentrieally with the shaft Gg outside of the block A4 and herein shown as being pivotally supported on the shaft Vitself by means of a hub H', surrou nding the said shaft. Attached to said shaft G outside of the actuating-arm M is an arm G, which is rigidly attached to said shaft and serves as a means of communicating oscillatory movement thereto. The actuating-arm M has an oscillatory movement upon its pivotal support, produced in the construction shown by means of a peripheral cam-surface C7 on the wheel C, Figs. l and 5, adapted for engagement with an antifric tion-roller on. on the outer end of said actuatingarm M. The said arm M is held in position for engagementl of the roller with the cam-surface C7 by means of a coiled spring M2, secured at one end to the sleeve M and at its opposite end to the block A4, Figs. lil and 14, said spring tending to throw the free end of the said arm M downwardly or inwardly toward the center of the wheel Cl. The inward movement 0f the said arm is limited by a stop-pin d?, secured in the block A in position to engage the lower edge of the said arm M. The action of the cam-surface C7 on the oscillating arm M will obviously have the effect of moving and oscillating said. arm once at each rotation of the cylinder, and in order to enable said arm to move the rockshaft G"s at desired times, to wit, at every second rotation of the cylinder, devices actuated by the oscillating actuating-lever I are provided for producing engagement of the arm i M with the arm G(i at proper times, the same i being constructed as follows: Mounted in the arm M is asliding pin M3, which is adapted to be thrust outwardly past the outer face of the arm into position to engage the arm G or to be withdrawn inside of the face of said arm, s0 as to avoid Contact with the said arm G", the parts being so arranged that when the said pin is advanced to engage the arm GGthe latter arm will move with the actuating-arm M as the latteris lifted, but when the pin is withdrawn the arm M may be oscillated without affecting the arm Gi'y or the rock-shaft to which it is attached. The pin Ms is shown as supported or guided at its outer end in the arm M and at its inner en d by engagement with a guide-arm In attached to the sleeve M. The pin M3 is provided at a point inside of the arm M with a notch 'm2, forminga shoulder which is engaged by the free end of the leaf-spring M4, which is attached to thc inner face of the arm M and IOO acts against the pin in a direction to force or carry the same inward or out of the path of the arm G6. The end of the spring Ml may have positive en ga gement with the pin M3, in which case the pin will in all instances be moved with thearm, but as a better construction the notch m2 is made of a width equal to or greater than the stroke of the pin and the spring engages only the shoulder formed at the inner end of the notch, being held in contact therewith by means of a second coiled spring m3, attached at one end to the spring M4 and at its opposite end to a stud m5 in the said pin M3, this construction enabling the free end of the spring M4 to be carried f'orward without moving the pin M3 in case there is any obstruction to prevent the forward movement of said pin. The said spring M4 is made of considerable width vertically at its end adjacent to the pin M3, and is so located, as clearly seen in Fig. 5, relatively to the oblique fiange t3 of the actuating-arm I, Fig. l, that said flange may press against or act on the inner face of the spring, the partsbeing so arranged that when the lower ,end of the actuating-lever is thrown outwardly away from the center of the cam the oblique flange acting on said spring M4 will thrust the latter outward, thereby moving endwise the pin M3 into position to engage the arm GG. This movement of the pin would be accomplished equally well if the spring M4 were positively connected with the pin M3, but connection of the spring withsaid pin by means of the secondary coiled spring m3 is desirable in order to prevent breakage of the parts it' by accident the pin were prevented from moving outwardly at the time the spring is moved in the manner described'.

The guide-lingers G when depressed operate in the usual manner as stops or gages to determine the position of theforward edge ,of the sheets to be printed as the same are fed to the cylinder by the attendant, and the fingers are lifted to allow the advance of the sheets when the sheets are gripped by the nippers and carried forward with the cylinder. The actuating-arm l being moved in a direction to throw outwardly the pin M3 at every alternate rotation of the cylinder only it follows that the pin M3 will be actuated, for the purpose stated, at the beginning of that revolution of the cylinder during which the impression is made, it being obvious that when the cam-surface CVT lifts the arm M during the succeeding rotation of the cylinder, or that during which the type-bed is moving backwardly from beneath it, the lever I will have been moved so as to allow the spring ML to retract the pin, so that the oscillation of the arm M will take place without affecting'the guidefingers, which will be held by the action of the spring G5 in their depressed position and in contact with the fingers 7c 7c on the feed-table.

As an improved construction in the guide.

fingers G and means for adjusting the same,

these parts are constructed as follows, and as more clearly shown in Figs. 15 and 16: The arm G2, which, as before stated, supports the vertical part G of the finger, consists of a tubular part g, which is attached directly to the shaft Gs by means of a set-screw g or otherwise, and a rod g2, which fits or slides within the tubular part g, and the outer end of which is reduced in size to receive a sliding sleeve g3, to which the vertical part G of the finger is directly attached, said sleeve being clamped on the outer end of the rod g2 by means of a set-screw g4, inserted through the sleeve, as shown. The enlarged part of the rod r 2 is made hollow and provided with interior screw-threads which are engaged by exterior screw-threads on an adj Listing-screw g5, which passes through the closed end of the tubular part g, and is provided with a milled head or thu mb-piece QG, by which the screwshaft may be turned to give longitudinal movement to the rod g2. A set-screwg7, inserted through the tubular part g, affords a means of rigidly securing the rod g2 in any position at which it may be adjusted. The vertical part G of the guide-finger consists, as herein shown, of a metal plate g8, made wider at its lower than at its upper end and secured to the collar g3, by which it is attached to the rod g2. Said plate is made wider at its lower end than the linger 7s of the feed-table and is notched or recessed to receive said finger, Fig. 16, so that the said plate extends downwardly below the top surface of the said finger at the side of the latter to avoid possibility of the edge ofthe sheet of paper which is brought against the finger from passing between the 'said plate g8 and the finger 7s, except when the plate is lifted free from the said finger. An oblique guide-finger g extends from the lower margin of the plate g8 upwardly and outwardly preferably to a point opposite the rod g2, said guide-finger serving to direct or guide the advance edge of the paper, as it is thrust toward the plate g8, downwardly into contact with the finger k, thereby bringing the advance edge of the paper with certainty intoposition adjacent to the impression-cylinder and most favorable for its. being gripped by the sheet-nippers. Said guide-finger Q9 is shown as consisting of a strip of sheet metal attached at the rear of the plate g8 and extending downwardly to the bottom thereof and through a notch in the lower margin of the said plate, from which notch it extends upwardly in an inclined position, as hereinbefore stated. L

N indicates a horizontal shaft extending longitudinally over t-he top of the impressioncylinder and which affords a support for the feed-roller O, which is mounted on the end of an oscillating arm O', having bearing upon said shaft N. Said feed-roller is mounted loosely on the end of the arm O and said arm swings freely on the shaft N, the said feed- IOO roller being intended to act by gravity on the surface of the paper, so as to press the same against the impression-cylinder and thereby insure its being fed forward upon the said fingers after the sheet-nil'ipers have released its forward or advance edge. Said shaft N is shown as supported at its opposite ends in blocks A A, which are attached to the machine-frame and forni also supports and hearings for the rod A2 and the shaft L.

The gear-segment P (shown in Fig. (l) is attached to the head B3 for the purpose of securing registry of the impression-cylinder with the type-bed, this being a feature heretofore common and forming no part of the present invention. The bracket A5 is shown in Figs. l, 3, and G as being extended inwardly over the said segment for the protection of the operator.

I claim as my invention l. The combination with an im pression-cylinder, the sheet-nippers thereof, and an oscillating shaft su pporting said nippers, of actuating mechanism for the nippers, com prising a wheel which turns with the impressioncylinder and is provided with a cam-groove which encircles the wheel twice, an actuatin lever which is given oscillatory movement by the action of said cam-groove, and actuating connections between said shaft and said lever at opposite sides of the pivot of the latter embracing oblique flanges at opposite ends of the lever, whereby the shaft is turned in one direction or the other at cach movement of the lever, substantially as described.

2. The combination with an iinpression-cyl inder, the sheet-nippcrs and lifting-fingers thereof, and oscillating shafts supportin said nippers and fingers, of actuating mechanism for said shafts, comprising a wheel which turns with the cylinder and is provided with asingle cam-groove which en circles the wheel twice, an actuating-lever which is given oscillatory movement by the action of said camgroove, actuating connections between one end of said lever and the lifting-finger shaft, and actuating connections between the parts of said actuating-lever at opposite sides of its pivot and the said nipper-shaft, whereby said shafts are given lnotion from the actuatinglever, substantially as described.

The com hination with an im pression-cylinder and the sheet-nippers thereof, of a shaft supporting the said nippers, aspring applied to hold the nippers at the opposite limits of their movement, a slotted cross-head attached to said shaft, sliding pins on the machineframe adapted to engage the said cross-head, and means for actuating said pins comprising a wheel turning with the cylinder and provided with a cam-groove which encircles the wheel twice, and an oscillating lever actuatcd by said cam-groove, said oscillating' lever being provided with oblique ilanges acting io give longitudinal movement to thepins when the lever is oscillated, substantially aS described.

ft. The combination with an imp rcssion-eylinder and the sheet-nippers thereof, of a rockshaft supporting the nippers, and a crosshead for actuating the rock-shaft located out side of the cylinder-head, said rock-shaft comprising a separate shaft-section attached to the cross-head and passing through the cylinder-head and which is journaled in the cylinder-head and is made not larger at its inner than at its outer part, and a coupling-piece located inside of the head and to which the main part of the shaft and the said separate section are detachably secured, said couplingpiece being larger in diameter than the crosshead section and bearing against the inner face of the cylinder-head, substantially as described.

The combination with an impression-cylinder and the lifting-fingers thereof, of a rockshaft supporting the lifting-iingers, a spring applied to throw thelifting-iingers toward the cylinder, a rocking arm rigidly attached to the rock-shaft, a movable cam-lever adapted to engage said arm, and means for actuating said cam-lever comprising a wheel turning with the cylinder and provided with a camgroove which encirclcs the wheel twice, an oscillating lever moved by said groove, a rockshaft provided with a rigid arni engaging said lever and with a cain projection engaging said cam-lever, and a spring acting -on the said rock-shaft to hold the rigid arm thereof in contact with said oscillating lever, substantially as described.

G. The combination with an im p ression-cyl.- inder, the tympan-clamps thereof and the lifting-fingers thereof, of a shaft supporting said tympan-clamps, a rock-shaft supporting the liftin g-fin gers, a rigid arm' attached to said lifting-finger shaft and a spring acting on said arm for throwing the lifting-lingers toward the cylinder, said spring being movably supported on the cylinder, and means, moved by the tyinpan-clamp shaft and acting on the spring to hold the saine in operative position when the tympan-clamps arc in position to grip the tvmpan, substantially as described.

7. The combination with an iin pression-cylinder and the tympan-gripping fingers and sheet-lifting fingers thereof, of a rock-shaft supporting the gripping-fingers, a rock-shaft snpportingthc sheetdifting fingers, a rocking arm attached to the shaft of the lifting-iingers, a leaf-spring acting on said rocking arm and pivotally connected with the cylinder,

an arm attached to said spring, and a projection on the gripping-finger rock-shaft acting on said arm to hold the said spring in operative position when the grilfiping-lingers are engaged with the tympan, substantially as described.

S. The combination with an impression-cylinder and the sheet-nippers and lifting-iin- IOO IIO

tir-1,20*? s) gers thereof, o f means for actuating the nippers comprising a rock-shaft supporting the same, a slotted cross-head on the rock-shaft, sliding pins engaging the said cross-head, a cam provided with a cam-groove which 'encircles the same twice, and an oscillating lever moved by the action of the cam-groove, and giving motion to said sliding pins, and means for actuating the lifting-ngers comprising a rock-shaft supporting the same, a rocking arm on the rock-shaft, a movable cam-arm adapted to engage said rocking arm, and a rock-shaft provided with a cam projection which acts on the said cam-lever and with a rigid arm which engages the said oscillating lever, substantially as described.

9. The combination with an impression-cylinder, of guide-lingers, a rock-shaft supporting the same7 and means for actuating the rock-shaft comprising an oscillating actuating-arm on the frame, a cam turning with the cylinder and giving oscillatory movement to the said actuating-arm, and means operating to produce engagement of the said actuatingarm with the rock-shaft`at every alternate rotation of the cylinder, substantially as described.

10. The combination with an impressioncylinder, the guide-iin gers thereof and a rockshaft supporting the same, of means for actuating the rock-shaft comprising a spring applied to throw the ingers toward the cylinder, an oscillating actuating-arm provided with a sliding pin, a rigid arm'on the rock-,shaft adapted for engagement with said pin, a cam turning with the cylinder and acting on the said actuating-arm to give oscillatory movement thereto, and means for actuating said sliding pin constructed to shift the same into position for engagement with the said arm on the rock-shaft at each alternate rotation of the cylinder, substantially as described.

11. The combination with an impressioncylinder and the sheet-guides thereof, of a rock-shaft supporting said guides, and an actuating device for the rock-shaft embracing an oscillating, actuating-arm, an arm on the rock-shaft and means for periodically engaging the actuating-arm with the arm on the rock-shaft, comprising a wheel which turns with the cylinder and is provided with a ca mgroove encircling the same twice, and an oscillating lever which is actuated by the said cam-groove, and the movement of which determines the time at which the actuating-arm is engaged with the arm on the rock-shaft and the guide-fingers are lifted, substantially as described.

12. The combination with an impressioncylinder and the guide-fingers thereof, of a rock-shaft supporting the guidengers, a spring throwing the guide-fingers toward the cylinder, an oscillating actuating-arm, a cam turning with the'cylinder and operating said actuating-arm, a rigid arm on the rock-shaft adjacent to the actuating-arm, a sliding pin on said actuating-arm, a Wheel turning with the cylinder and provided with a cam-groove which encircles it twice, and an oscillating lever moved by said cam-groove and adapted to actuate said sliding pin in the actuatingarm, substantially as described.

13. The combination with an impressioncylinder and the guide-fingers thereof, of a rock-shaft supporting the guide-fingers, an oscillating actuating-arm, a cam turning with the cylinder and moving said actuating-arm, a rigid arm on the rock-shaft adjacent to the actuating-arm, a sliding pin in the said actuating-arm, a spring applied to move said sliding pin in one direction and means for moving the pin comprising a wheel turning with the cylinder and provided with a camgroove which encircles it twice, and an oscillating lever which is actuated by said cam-groove and operates to move said pin against the action of said spring, substantially as described.

14. The combination with an impressioncylinder and sheet-guides, of a rock-shaft su pporting the guides, a spring turning the rockshaft in one direction, a rigid arm on the rockshaft, an oscillating actuating -a-rm, a cam turning with the cylinder and moving said actuating-arm, a sliding pin in the actuatingarm adapted to engage the said rigid arm on the rock-shaft, a wheel provided with a camgroove which encircles it twice, and an oscillating lever operated by the cam-groove and provided wit-li an inclined or oblique iiange through the medium of which motion is given to said sliding pin, substantially as described.

15. The combination with an impressioncylinderand sheet-guides, of a rock-shaft supporting the sheet-guides, an oscillating arm for giving movement to said shaft, a rigid arm attached to the shaft adjacent to said oscillating arm, a sliding pin in the oscillating arm adapted for engagement with the said rigid arm on the shaft, a spring holding the said pin normally free from said rigid arm, means acting against the said spring and having spring or elastic connection with the pin for advancing the same into position to engage said rigid arm on the rock-shaft, substantially as described.

16. The combination with an impressioncylinder, the slieet-nippers thereof and sheetguides, of a rock-shaft supporting the nippers, a spring applied to hold the rock-shaft at either limit of its movement, a slotted crosshead on the rock-shaft, sliding pins in the machine-frame adapted to engage said crosshead, a Wheel turning with the cylinder and provided with a cam-groove Which encircles it twice, an oscillating lever provided with oblique lianges which give endwise movement to the said sliding pins, a rock-shaft supporting the sheet-guides, an oscillating actuatingarm for giving movement to said rock-shaft, a sliding pin in said actuating-arm through IOO IIC

the medium of which motion is given to the guide-lingers, and :t springtending to hold the said sliding pin out of operative position, the said oblique flange on the said oscillating lever being adapted to transmit motion also to said sliding pin in the actuating-arm,substantially as described.

In testimony that I claim the foregoing as inyinvention I affix nly signature in pre/sence of two witnesses.

ROBERT MIEHLE.

Witnesses:

TAYLOR E. BROWN, C. CLARENCE POOLE. 

